Anti-breakage structure for transmitting end formed on flexible printed circuitboard

Abstract

An anti-breakage structure for a transmitting end of flexible printed circuitboard (FPC) is disclosed, which comprises at least a via hole, being formed on the FPC at a position corresponding to each pin of the transmitting end while enabling the at least one via hole formed on any two neighboring pins to be arranged in a staggered manner without being align on the same line. As the via holes formed on any two neighboring pins of the FPC's transmitting end are not aligned with each other but are scattered so that the area where stress is likely to concentrate is increased when the FPC is subjected to an external force, stresses can be distributed evenly through the whole transmitting end of the FPC without forming any specific stress concentration area.

1 . An anti-breakage structure for a transmitting end of a flexible printed circuitboard (FPC), comprising:
 at least a via hole, being formed on the FPC at a position corresponding to each pin of the transmitting end while enabling the at least one via hole formed on any two neighboring pins to be arranged in a staggered manner without being align on the same line.   
   
   
       2 . The anti-breakage structure of  claim 1 , wherein, the at least one via hole formed respectively on any two neighboring pins are arranged in a staggered manner as following: starting from an outermost pin in the transmitting end to the center thereof, the at least one via hole formed on the outermost pin is located at a bottom position of the outermost pin while enabling the at least one via hole formed on another pin neighbor to the outermost pin to be located at a top portion of the aforesaid neighbor pin, and then enabling the at least one via hole formed on the pin to the center and next to the aforesaid neighbor pin to be located at its bottom portion, and sequentially up-and-down thereafter until a stop point specified about the center of the transmitting end is reached. 
   
   
       3 . The anti-breakage structure of  claim 1 , wherein the formation of the via holes on the pins is arranged as following: starting from the outermost of the transmitting end to the center, the at least one via hole on the two neighboring pins located at the outermost of the transmitting end are formed at their bottom portions, and then the at least one via hole on two neighboring pins to the center and neighbor to the aforesaid two outmost pins are formed at their top portions, and sequentially up-and-down thereafter until a stop point specified about the center of the transmitting end is reached. 
   
   
       4 . The anti-breakage structure of  claim 1 , wherein, starting from two outermost pins to the center of the transmitting end, the formation of the via holes on the pins is arranged as a wave that undulates starting from the two via holes located respectively at bottom portions of the two outermost pins toward the center of the transmitting end. 
   
   
       5 . The anti-breakage structure of  claim 1 , wherein each pin in the transmitting end is formed with a plurality of via holes. 
   
   
       6 . The anti-breakage structure of  claim 5 , wherein the interval between any two via holes in the plural via holes is a constant.